n|cho|@@@wr@y @end|ng |rom nt|wor|d@com
Fri Feb 1 11:20:57 CET 2019
I have been given a wav file of train locomotive noise - literally something you can play back and hear. Using the audio package and the load.wave function I have got a 1.5 million element vector which visually at least has some periodicity in certain parts and does not seem to be completely random. Most elements (99%) are within a range of about -0.14 to +0.14 with occasional outliers. Beneath is a typical short segment.
This is the head:
sample rate: 16000Hz, mono, 16-bits
 -3.051851e-05 6.103516e-05 -6.103702e-05 3.051758e-05 3.051758e-05 -1.220740e-04
Most elements (99%) are within a range of about -0.14 to +0.14 with occasional outliers
This is the same kind of output as is illustrated in the documentation:
What I am not sure about, and I can't find any clear explanation, is what these elements actually stand for?
I would have thought that one needed as a minimum both volume and frequency ie a two dimensional vector but as far as I can tell
there is only one single vector. I'm aware that this question is pushing the envelope of R help but...
Thanks, Nick Wray
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